package login;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import java.io.IOException;

@WebServlet("/index")
public class IndexServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        // 把用户的信息展示到页面上
        HttpSession session = req.getSession(false);
        if (session == null) {
            // 用户未登录，调转到登录页面
            resp.getWriter().write("login.html");
            return;
        }
        String username = (String) session.getAttribute("username");
        String password = (String) session.getAttribute("password");
        Integer visitCount = (Integer) session.getAttribute("visitCount");
        visitCount += 1;
        session.setAttribute("visitCount", visitCount);

        resp.setContentType("text/html;charset=utf8");
        resp.getWriter().write("username: " + username + " 访问次数: " + visitCount);
    }
}
